baber/WOPTO huggingface dataset:
Patent CA-2195966-A1 (CA)
Title: Method of fracturing and propping a formation
Inventor: JONES LLOYD G
IPC: E21B43/26
Filed: 1995-06-23
Abstract: A method for fracturing and propping a thick and/or non-homogeneous fracture interval (12) of a subterranean formation which is traversed by a wellbore(11). A workstring (20) is lowered into the wellbore and a fracturing fluid (30) is flowed into one end of the fracture interval annulus (33a) (i,e., that portion of the well annulus (33) which lies adjacent the fracture interval) to initiate a fracture. The flow of fracturing fluid is ceased and a slurry (31) containing proppants is flowed into said one end of the fracture interval annulus. During flow of fracturing fluid and slurry into said one end of the annulus, both are delivered through alternate flowpaths (24) to different levels within said fracture interval.      Alternate slugs of fracturing fluid and slurry is continued through the same end of the annulus until all of the levels or zones within the fracture interval have been fractured and propped and in some instances, also gravel-packed.
Patent CA-2196362-A1 (CA)
Inventor: KIERPAUL CHESTER F
IPC: B65G37/02
Filed: 1997-01-30
Abstract: A tote conveyor system for transporting totes from an end-of-use  point  to  the  point-of-use.    The  conveyor  system comprising  a  combination of  conveyors  including  a  vertical conveyor and a substantial horizontal conveyor with a means to transferring totes between the two different systems.
Patent CA-2197680-A1 (CA)
Inventor: SAMOUR CARLOS M
IPC: A61K9/70
Filed: 1996-06-27
Abstract: A mixture of lipophilic and amphiphilic/hydrophilic film-forming polymers of the formula (I) R(CO) m O- (CH2CHR1O) n- [OCNH-Z-NHCO2(CH2CHR2O) n'] p -OCNH-Z-NHCO2-(CH2CHR1O) n- (CO) m R (I) wherein R represents (i) an alkyl, alkenyl or alkaryl hydrocarbyl group of from 1 to 30 carbon atoms or (ii) a polypropylene oxide group (PPO); R1 and R2, each, independently, represent a hydrogen atom, or a methyl or ethyl group; Z represents a divalent linking hydrocarbyl group; m is 0 or 1; n and n', are each, independently, a positive number; and p is >=0, preferably p is 0 or 1, provide a skin substantive, occlusive moisture barrier covering for skin or hair. The compositions have a moisturizing effect by reducing transepidermal water loss. The lipophilic or amphiphilic or hydrophilic film-forming polymers may be used individually or as mixtures as a delivery system for delivering pharmacological or cosmetic agents to the skin or hair.
Patent CA-2199034-A1 (CA)
Inventor: TOMKO GEORGE J
IPC: G07C9/00
Filed: 1995-09-06
Abstract: A key generation system is implemented as follows. In an enrolment apparatus, a unique number for use with PIN operated machines or public key cryptography system is generated by manipulation of fingerprint information of a subscriber. A filter is then generated which is a function both of the Fourier transform of the subscriber's fingerprint(s) and of the unique number. This filter is stored on a subscriber card. When the subscriber wishes to generate his key, he inputs his card to a card reader of an apparatus and places his finger(s) on a fingerprint input. The apparatus generates an optical Fourier transform from the fingerprint input. The Fourier transform signal is incident on to a spatial light modulator programmed with the filter information from the card. An inverse transform is generated from the filtered signal and this is used to regenerate the key that will be used as the PIN in a PIN operated device, or as the private key in a public key cryptography system.
Patent CA-2199803-A1 (CA)
Title: Sprinkler
Inventor: SUNDHOLM GOERAN
IPC: B05B1/14
Filed: 1995-09-12
Abstract: The present invention relates to a sprinkler which in stand-by mode comprises a heat-sensitive releasing device (20) in close contact with a spindle (15). In order to provide a new sprinkler which ensures even and straight load on the releasing device (20) and which also guarantees even spreading of extinguishing liquid in the form of liquid fog, the sprinkler is characterized in that the spindle (15) is mounted in a channel (12) with a liquid inlet (10) and outlet (13) to preferably obliquely positioned nozzles (14), and bears slidably or almost slidably against the wall of the channel (12) on both sides of the liquid inlet (10) for balancing the liquid pressure at the liquid inlet when the sprinkler is in stand-by mode, and that a nozzle (27) centrally directed in relation to the obliquely positioned nozzles is provided at the end of the spindle (15) which faces the releasing device (20).
Patent CA-2199826-A1 (CA)
Title: Multiline gaming machine
Inventor: BENNETT NICHOLAS LUKE
IPC: A63F3/00
Filed: 1995-09-12
Abstract: A slot machine (50) is disclosed having a display matrix (51) of the type housing spinning rails or pseudo reels, and having a possible winning pay line all possible combinations of symbol positions which include one position in each column of the display. For an n row x m column display matrix the number of possible lines becomes n m, each of which may be selected individually or in groups (54).
Patent CA-2199877-A1 (CA)
Inventor: RENAUD MARK L
IPC: E04D13/076
Filed: 1997-03-13
Abstract: THIS INVENTION IS A MANUALLY OPERATED TOOL TO CLEAN EAVESTROUGHS WITHOUT THE AID OF A LADDER.  STARTING   SECTION OF CONDUIT THE CONDUIT IS BENT SO THAT WHEN THE CONDUIT IS HELD VERTICAL THE BENT SECTION IS POINTING DOWN ON A 30 DEGREE ANGLE.  AT THIS END IS A FIXED HORIZONTAL BRACKET.  CRISSCROSSED JAWS ATTACH TO THE BRACKET AND MOVE FREELY.  ATTACHED TO EACH END OF THE BRACKET IS A SPRING THAT ATTACHES TO THE JAW TO RETRACT THE JAWS WHEN PRESSURE IS RELEASED. ATTACHED TO THE BOTTOM OF THE JAWS ARE COLLECTOR TEETH.  THERE IS SEVEN INCHES OF OPENING BETWEEN THE TEETH.  A SEVEN INCH HORIZONTAL CABLE SPANS THE TOP OF THE JAWS.  A FIVE FOOT CABLE IS ATTACHED TO THE HORIZONTAL CABLE FOLLOWING THE SHAPE OF THE CONDUIT DOWN TO A SLIDING HANDLE.  PULL HANDLE DOWN, JAWS CLOSE.
Patent CA-2200297-A1 (CA)
Title: Metallic material with low melting temperature
Inventor: RANCOURT JAMES
IPC: H01H1/08
Filed: 1995-10-10
Abstract: A gallium-indium-zinc-copper metallic material has been found to exhibit many of the advantageous properties of mercury, such as electrical conductivity, fluidity, and high vaporization temperature. The metallic material is formulated by combining individual components in the presence of aqueous base, isolating the metallic phase, and heating the metallic combination. The metallic material is formulated to have sufficient quantities of each of the individual components such that the metallic material has a solidification temperature below 0 ·C.
Patent CA-2202313-A1 (CA)
Title: Multi-strand cord for timing belts
Inventor: BRUYNEEL POL
IPC: D07B1/06
Filed: 1997-04-10
Abstract: A steel cord (10) for the reinforcement of timing belts or transmissionbelts comprises only two to five strands (12) tightly twisted with each other in a first direction at a cord twisting pitch. Each of said strands (12) comprises only two to seven steel filaments (14) tightly twisted with each other in this first direction at a strand twisting pitch. The steel filaments (14) have a diameter ranging from 0.03 to 0.40 mm. The ratio strand twisting pitch to filament diameter is greater than 30, the ratio cord twisting pitch to filament diameter is greater than 30, and the ratio cord twisting pitch to strand twisting pitch is greater than 1. Such a steel cord has an acceptable low torsion moment under axial loads.
Patent CA-2203799-A1 (CA)
Title: Eddy current hybrid probe
Inventor: SAMSON ROCK
IPC: G01N27/90
Filed: 1995-05-12
Abstract: The eddy current probe for non-destructive testing of a conductive elongated member comprises an oscillating magnetic field generator for producing a magnetic field directed towards a cross-sectional peripheral surface of the elongated member. The magnetic field generator includes a pair of coils arranged to be spaced apart along the elongated member to produce an enhanced combined magnetic field component perpendicular to the cross-sectional peripheral surface in a space between the coils and a reduced magnetic field component lengthwise along the elongated member. A ferromagnetic member is movably mounted for altering the magnetic field at points along the crosssectional peripheral surface provided between the coils. A detecting and analyzing system measures an impedance of the coils as the generator is moved along the elongated member and as the field altering member is moved over the peripheral surface. An enhanced signal is obtained.
Patent CA-2205387-A1 (CA)
Title: Roller mill
Inventor: BRUNDIEK HORST
IPC: B02C15/00
Filed: 1995-11-03
Abstract: The invention relates to a roller mill with a rotary grinding bowl, grinding rollers rolling thereon and retaining devices for influencing the grinding material movement between the grinding rollers.        For increasing the throughput of a low-cost roller mill, low-cost, effective retaining devices are provided between the grinding rollers and are in each case constructed as a rotary damming wall formed from one or more damming rolls.      The damming rolls have damming faces, which block the outwardly moved grinding material and retain same for further grinding. In a first embodiment a damming face is constructed on the inner end face of a damming roll. According to a further development radially projecting damming rings with additional damming faces are fitted.
Patent CA-2206708-A1 (CA)
Inventor: LISSOLO LING
IPC: G01N33/569
Filed: 1996-10-04
Abstract: The invention relates to a protein of helicobacter pylori in a substantially purified form, susceptible of being obtained from a membrane fraction of helicobacter pylori and of which the molecular weight after electrophoresis on polyacrylamide gel 10 % in the presence of SDS is approximately of 76 kD.
Patent CA-2207817-A1 (CA)
Title: Fair allocation of excess resources in a communications system
Inventor: WALL WAYNE
IPC: H04L12/801
Filed: 1995-12-13
Abstract: In a communications system, a method is described for controlling the excess usage of a finite resource through which information flows by a plurality of sources having an "excess" state. For each source a determination is made as to whether the source is in the excess state. If the excess information rate is less than a predetermined fair information rate, the information is passed to the resource. If the excess information rate is greater than the fair information rate, the information is discarded.
Patent CA-2208520-A1 (CA)
Inventor: CALLEWAERT GEORGE LEO
IPC: A61K31/42
Filed: 1995-12-22
Abstract: A di-clavulanate salt derived from clavulanic acid and a diamino ether of formula (I), where R1 is an alkylene group, optionally having one or more inert substituents; and each of R2 and R3 is a hydrogen atom or an alkyl group, optionally having one or more inert substituents, or R2 and R3 together complete a heterocyclic ring having 4 to 7 carbon atoms, again optionally having one or more inert substituents. The salt is prepared by reacting a bis(2-dialkylaminoalkylene)ether (or a salt thereof) with clavulanic acid in an organic solvent and isolating the resulting salt. The clavulanic acid salt can be used in pharmaceutical formulations together with a pharmaceutically acceptable carrier, and, optionally, a beta-lactam antibiotic, and is useful as an intermediate for the potassium salt.
Patent CA-2210368-A1 (CA)
Inventor: BRYANT CONSTANCE ELIZABETH
IPC: A61G5/10
Filed: 1997-07-09
Abstract: Many individuals in wheelchairs are struck by motor vehicles while crossing roadways.  Usually motorists fail to see them.  This invention provides for a warning lamp apparatus for a wheelchair comprising:  a mounting base adapted to be slidingly received and removed from the upper rear portion of the wheelchair;  an upright support member extending from the mounting base,  a lamp mounted on the top portion of the upright member;  and, a power supply means to illuminate the lamp.  A preferred aspect of this invention provides for an apparatus as above wherein the mounting base is a generally horizontal U shaped member which may be slidingly received in a rear upper portion of the wheelchair 22.  In the most preferred aspect of the invention the mounting base comprises a box 34 which is adapted to carry an umbrella support arm and provide accessory storage for the rider.  The apparatus may be readily removed when the wheelchair is used indoors or quickly installed when the wheelchair is to be used out of doors.
Patent CA-2211108-A1 (CA)
Inventor: ITTEL STEVEN DALE
IPC: C07F5/00
Filed: 1996-01-24
Abstract: L'invention concerne des procédés de polymérisation d'éthylène, d'oléfines acycliques et/ou d'oléfines cycliques sélectionnées et, éventuellement, d'esters oléfiniques ou d'acides carboxyliques sélectionnés, ainsi que d'autres monomères. Les polymérisations sont catalysées par des composés sélectionnés de métaux de transition et, parfois, par d'autres co-catalyseurs. Etant donné que quelques polymérisations présentent certaines caractéristiques de polymérisations vivantes, on peut préparer facilement des copolymères bloc. La plupart des polymères préparés sont souvent nouveaux, particulièrement en ce qui concerne leur microstructure, qui leur confère quelques unes de leurs propriétés inhabituelles. L'invention concerne un nombre important de nouveaux catalyseurs, ainsi que quelques procédés nouveaux pour les fabriquer. Les polymères obtenus sont utiles en tant qu'élastomères, résines de moulage ou incorporés dans des adhésifs etc. L'invention concerne également la synthèse d'.alpha.-oléfines linéaires par oligomérisation d'éthylène au moyen, en tant que catalyseur, d'une combinaison d'un composé de nickel possédant un ligand sélectionné de .alpha.-diimine et d'un acide sélectionné de Lewis ou de Bronsted ou bien par contact de complexes sélectionnés de nickel et .alpha.diimine avec de l'éthylène.
Patent CA-2211458-A1 (CA)
Inventor: TASAKA AKIHIRO
IPC: C07D521/00
Filed: 1996-02-15
Abstract: La présente invention concerne un composé de type azole représenté par la formule (I) où Ar est un groupe phényle à substitution optionnelle; R?1¿ et R?2¿, identiques ou différents, sont un atome d'hydrogène ou un groupe alkyle inférieur, ou encore peuvent se combiner entre eux pour former un groupe alkylène inférieur; R?3¿ est un atome d'hydrogène ou un groupe acyle; X est un atome d'azote ou un groupe méthine; A est Y=Z (Y et Z, identiques ou différents, étant un atome d'azote ou un groupe méthine à susbtitution optionnelle par un groupe alkyle inférieur) ou un groupe éthylène à substitution optionnelle par un groupe alkyle inférieur; n est un entier appartenant à la suite allant de 0 à 2; et Az est un groupe azolyle à substitution optionnelle, ou le sel de ce groupe. Ce composé est un agent antifongique, utile pour la prévention et le traitement d'une infection fongique d'un mammifère.
Patent CA-2221353-A1 (CA)
Title: Resin composition and laminate for storage of liquid food
Inventor: HARA MORIO
IPC: C08L23/00
Filed: 1996-05-17
Abstract: The present invention teaches (1) a composition for packaging aqueous liquid foods in which a hydrophilic reducing organic compound or an organic compound and a porous inorganic compound are dispersed in a hydrophobic thermoplastic resin by means of a hydrophilic and water insoluble thermoplastic resin, (2) a laminate for packaging the foods having an innermost layer or a layer adjacent to the innermost layer made of such composition, and (3) a laminate for packaging the foods having an innermost layer or a layer adjacent to the innermost layer made of a hydrophobic thermoplastic resin into which is dispersed a porous inorganic compound supporting an ascorbic acids.     When aqueous liquid foods such as juice, milk or the like are packaged using this composition or laminate, it is possible to prevent degradation due to oxygen existing inside or outside the package, whereby the contents can be safely preserved for a long period of time.
Patent CA-2223146-A1 (CA)
Inventor: MCNEIL MICHAEL
IPC: G11B20/18
Filed: 1996-06-05
Abstract: L'invention concerne un procédé de correction d'erreurs de données qui est mis en oeuvre dans une unité de disque pourvue d'une tête magnéto-résistive. Le procédé de correction d'erreurs augmente le courant continu de polarisation appliqué à la bande de lecture de la tête magnéto-résistive. Cette valeur accrue est prédéterminée pour une unité de disque pourvue d'une tête magnéto-résistive déterminée. Si les procédés classiques de correction d'erreurs échouent, le courant continu accru de polarisation est appliqué à la bande de lecture afin de réduire le taux d'erreurs binaires produites pendant une opération de lecture effectuée par l'unité de disque.
Patent CA-2224261-A1 (CA)
Inventor: CLOUTIER MARK
IPC: H03L7/081
Filed: 1997-12-09
Abstract: An amplitude feedback control loop to control the output power level  of  an amplifier.   The  amplifier  is  analyzed as  a classical feedback control system.  Some important additions to the amplitude and frequency feedback control are required to realize a practical form of the invention on an integrated circuit.  In its most general sense, the input signal is the input referred thermal noise of the amplifier plus any external source of energy.  In its realization as a source the external signal is not required.
Patent CA-2228795-A1 (CA)
Title: Procedure and apparatus for detecting and locating trapped individuals (ex. avalanche victims)
Inventor: MOULIN JEAN MARC
IPC: G01V3/10
Filed: 1998-02-03
Abstract: The detection logic mechanism has a detector receiving distress signals, and makes comparisons (1) with a reference level to find if a distress signal exists, with subsequent signalling to the life saver. The life saver rotates the receiver around its vertical axis, and the maximum signal (3) is detected. The location of the victim is determined , and the life saver heads off in the appropriate direction until a high threshold level (6) is passed, signalling the location of the victim. There are also logic steps to reject directions where levels are too low and to repeat the cycle.
Patent CA-2230517-A1 (CA)
Title: Novel phosphino derivatives
Inventor: SMITH ALAN CRAIG
IPC: C23F11/167
Filed: 1998-02-25
Abstract: The reaction of compounds of the formula: X2O3P CHY CZ2 where Y and each Z are each H, PO3X2, SO3X or CO2X (e.g. vinyl phosphonic acid or vinylidene diphosphonic acid) with hypophosphorous acid in the presence-of free radicals provides novel compounds X2O3PCHYCZ2PO2XH which react with monomers such as vinyl sulphonate, vinyl phosphonate, vinylidene diphosphonate and acrylic acid to form telomers useful for scale inhibition, especially barium scale in oil wells. The polymers show better absorption to rock than PVSA and better thermal stability than random copolymers containing equivalent phosphorus.
Patent CA-2235965-A1 (CA)
Title: Diaphragm valve
Inventor: BACKLUND INGVAR
IPC: F16K11/20
Filed: 1996-11-08
Abstract: A valve housing of a diaphragm valve has a first valve chamber (14), into which open a central channel (16) and first (15) and second (16) side channels.  Valve seats (18, 19) are arranged in the housing, and a first diaphragm (21) is adapted to seal against at least one of the first and second valve seats. The first diaphragm (21) is adapted to be pressed against and released from the valve seats, thereby shutting and opening, respectively, passage between the central channel and the side channels. A second valve chamber (45), into which opens a fourth channel (48), communicates with the central channel (16) through an opening (46) in the housing. A third valve seat (49) is provided and a second diaphragm (52) is adapted to be brought into and away from sealing engagement with the third valve seat (49). The second diaphragm (52) is adapted to be pressed against and released from the third valve seat (49), thereby shutting and opening, respectively, passage between the fourth channel (48) and the central channel (16).
Patent CA-2236550-A1 (CA)
Title: Hand-held electronic printer
Inventor: BOBRY HOWARD H
IPC: B41J3/39
Filed: 1996-11-01
Abstract: A hand-held and self-contained electronic printing device (10) for printing indicia on a medium (M) includes a housing (12) that can be manually positioned adjacent a surface of the medium (M) and remain stationary against the medium (M) during the printing sequence. The housing (12) has an aperture that generally defines a printing area on the medium (M) when the housing (12) in in position for printing, and a printer for printing indicia in a selectable pattern of dots on the medium (M) within the printing area. The housing (12) also contains an actuator (20) for initiating a printing sequence and electronic control means for controlling the printer to print indicia on the medium (M) during a printing sequence. In one embodiment the print head can be moved to sweep across a printing area by a manual force applied to an actuator (20).
Patent CA-2237944-A1 (CA)
Title: Method of interpreting spectrometric data
Inventor: BARWICZ ANDRZEJ
IPC: G01N21/25
Filed: 1998-05-19
Abstract: A method for spectral measurement is disclosed. The method uses a low- resolution grating to disperse light and thereby image a spectrum thereof. The imaged spectrum is converted into a digital electrical signal and is processed in order to enhance the spectral information. The resulting spectral information is analogous to that captured using a higher resolution spectral imager with optical processing of the spectral data. The method is equally applicable to enhancing resolution of spectra captured using high resolution spectral imaging devices.
Patent CA-2238516-A1 (CA)
Title: Acyclic nucleoside derivatives
Inventor: ENGELHARDT PER
IPC: A61P31/18
Filed: 1997-02-14
Abstract: Compounds of formula (I) where one of R1 and R2 is -C(O)CH(CH(CH3)2)NH2 or -C(O)CH(CH(CH3)CH2CH3)NH2; the other of R1 and R2 is -C(~O)C3-C21 saturated or monounsaturated, optionally substituted alkyl; and R3 is OH or H; and pharmaceutically acceptable salts thereof have utility as enhanced bioavailability antivirals against herpes and retroviral infections.
Patent CA-2239134-A1 (CA)
Title: Control apparatus for construction machine
Inventor: AKAKI TOMOHIRO
IPC: E02F9/12
Filed: 1997-03-14
Abstract: The present invention relates to a control apparatus for a construction machine such as a hydraulic shovel, and the control apparatus for a construction machine includes a revolving operation member for operating a construction machine revolving unit (14), a fluid pressure pump (2) and an accumulator (5) for accumulating working oil from the fluid pressure pump (2), a fluid pressure actuator (7) for driving the construction machine revolving unit (14) to revolve with the working oil from the fluid pressure pump (2) and the accumulator (5), a first control valve (8) interposed between the fluid pressure actuator (7) and the fluid pressure pump (2), a second control valve (11) for controlling an inflow condition of the fluid from the fluid pressure actuator (7) into the accumulator (5), and control means (9) including first valve control means (9a) for controlling the first control valve (8) and second valve control means (9b) for controlling the second control valve (11).
Patent CA-2240162-A1 (CA)
Title: Conductive element with lateral oxidation barrier
Inventor: JEWELL JACK L
IPC: H04L29/08
Filed: 1996-12-04
Abstract: A conductive element with a lateral oxidation barrier is provided for the control of lateral oxidation processes in semiconductor devices such as lasers, vertical cavity surface emitting lasers and light emitting diodes. The oxidation barrier is formed through modification of one or more layers which initially were receptive to oxidation. The quality of material directly below the oxidation barrier may be preserved. Related applications include the formation of vertical cavity surface emitting lasers on non-GaAs substrates and on GaAs substrates.